Alert archive / Iowa / Tornado Watches in 2003
Tornado Watch 572
The Storm Prediction Center issued this tornado watch at Jun 23, 2003, 8:55 PM CDT for 30 counties in Iowa; Atchison County, Missouri; 17 counties in Nebraska. It was in force for 4 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 23, 2003, 8:55 PM CDT (01:55 UTC)
- Expired
- Jun 24, 2003, 1:00 AM CDT
- In force
- 4 hr
- Issued by
- the Storm Prediction Center
All 48 counties
Audubon County, IA, Buena Vista County, IA, Calhoun County, IA, Carroll County, IA, Cass County, IA, Cerro Gordo County, IA, Cherokee County, IA, Clay County, IA, Crawford County, IA, Emmet County, IA, Fremont County, IA, Greene County, IA, Guthrie County, IA, Hancock County, IA, Harrison County, IA, Humboldt County, IA, Ida County, IA, Kossuth County, IA, Mills County, IA, Monona County, IA, Montgomery County, IA, Palo Alto County, IA, Pocahontas County, IA, Pottawattamie County, IA, Sac County, IA, Shelby County, IA, Webster County, IA, Winnebago County, IA, Worth County, IA, Wright County, IA, Atchison County, MO, Burt County, NE, Cass County, NE, Douglas County, NE, Gage County, NE, Jefferson County, NE, Johnson County, NE, Lancaster County, NE, Nemaha County, NE, Otoe County, NE, Pawnee County, NE, Richardson County, NE, Saline County, NE, Sarpy County, NE, Saunders County, NE, Seward County, NE, Thayer County, NE, Washington County, NE
The radar
The Omaha radar (KOAX), 49 km from the middle of the area, began a volume at 01:57 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
Warnings issued inside it
13 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 23, 10:22 PM CDT | Severe Thunderstorm Warning | FSD | Cherokee, Plymouth | 38 min |
| Jun 23, 10:38 PM CDT | Severe Thunderstorm Warning | FSD | Buena Vista | 52 min |
| Jun 23, 10:50 PM CDT | Tornado Warning | FSD | Ida, Woodbury | 25 min |
| Jun 23, 11:03 PM CDT | Severe Thunderstorm Warning | DMX | Pocahontas | 57 min |
| Jun 23, 11:21 PM CDT | Severe Thunderstorm Warning | FSD | Cherokee | 39 min |
| Jun 23, 11:35 PM CDT | Tornado Warning | DMX | Pocahontas | 40 min |
| Jun 23, 11:37 PM CDT | Severe Thunderstorm Warning | FSD | Clay, O'Brien | 53 min |
| Jun 23, 11:53 PM CDT | Severe Thunderstorm Warning | FSD | Cherokee | 22 min |
| Jun 23, 11:55 PM CDT | Severe Thunderstorm Warning | FSD | Ida | 65 min |
| Jun 24, 12:08 AM CDT | Severe Thunderstorm Warning | DMX | Humboldt | 37 min |
| Jun 24, 12:16 AM CDT | Severe Thunderstorm Warning | FSD | Buena Vista, Cherokee | 44 min |
| Jun 24, 12:28 AM CDT | Severe Thunderstorm Warning | DMX | Sac | 47 min |
| Jun 24, 12:52 AM CDT | Severe Thunderstorm Warning | FSD | Ida, Woodbury | 38 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Topeka, KS (KTOP), launched 00:00Z, 1.9 hours before the alert went out and 275 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 3880 J/kg
- Mixed-layer CIN
- -32 J/kg
- Mixed-layer LCL
- 1226 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 100 m²/s²
- 0-3 km storm-relative helicity
- 366 m²/s²
- Significant tornado parameter
- 2.9
- Supercell composite
- 23.8
The text
As transmitted, in the capitals the NWS used until 2016.
000
WWUS20 KWNS 240154
SEL2
SPC WW 240155
IAZ000-NEZ000-240600-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 572
NWS STORM PREDICTION CENTER NORMAN OK
855 PM CDT MON JUN 23 2003
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
WESTERN AND NORTHERN IOWA
EASTERN NEBRASKA
EFFECTIVE THIS MONDAY NIGHT AND TUESDAY MORNING FROM 855 PM UNTIL
100 AM CDT.
TORNADOES...HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE TORNADO WATCH AREA IS ALONG AND 55 STATUTE MILES EAST AND WEST
OF A LINE FROM 40 MILES NORTHWEST OF MASON CITY IOWA TO 15 MILES
SOUTH OF BEATRICE NEBRASKA.
REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA.
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.
OTHER WATCH INFORMATION...CONTINUE...WW 567...WW 568...WW 569...WW
570...WW 571...
DISCUSSION...SUPERCELL DEVELOPMENT IS EXPECTED TO CONTINUE SPREADING
EWD OUT OF NEB THIS EVENING. SHEAR PROFILES WILL ALSO INCREASE AS
LLJ INTENSIFIES...INCREASING THE POTENTIAL FOR ISOLATED TORNADOES.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550.
MEAN STORM MOTION VECTOR 24035.
...EVANS
433,0924 400,0954 400,0974 433,0945
WWUS20 KWNS 240154
SEL2
SPC WW 240155
IAZ000-NEZ000-240600-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 572
NWS STORM PREDICTION CENTER NORMAN OK
855 PM CDT MON JUN 23 2003
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
WESTERN AND NORTHERN IOWA
EASTERN NEBRASKA
EFFECTIVE THIS MONDAY NIGHT AND TUESDAY MORNING FROM 855 PM UNTIL
100 AM CDT.
TORNADOES...HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE TORNADO WATCH AREA IS ALONG AND 55 STATUTE MILES EAST AND WEST
OF A LINE FROM 40 MILES NORTHWEST OF MASON CITY IOWA TO 15 MILES
SOUTH OF BEATRICE NEBRASKA.
REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA.
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.
OTHER WATCH INFORMATION...CONTINUE...WW 567...WW 568...WW 569...WW
570...WW 571...
DISCUSSION...SUPERCELL DEVELOPMENT IS EXPECTED TO CONTINUE SPREADING
EWD OUT OF NEB THIS EVENING. SHEAR PROFILES WILL ALSO INCREASE AS
LLJ INTENSIFIES...INCREASING THE POTENTIAL FOR ISOLATED TORNADOES.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550.
MEAN STORM MOTION VECTOR 24035.
...EVANS
433,0924 400,0954 400,0974 433,0945SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 23, 8:08 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Audubon, Boone, Calhoun, Carroll and 28 more | 67 min |
| Jun 23, 9:10 PM CDT | Mesoscale Discussion | SPC | Cherokee, Dickinson, Lyon, O'Brien, Osceola, Sioux | 65 min |
| Jun 23, 10:38 PM CDT | Mesoscale Discussion | SPC | Buena Vista, Calhoun, Cherokee, Clay, Humboldt, Ida and 9 more | 67 min |
| Jun 23, 10:50 PM CDT | Tornado Watch | SPC | Plymouth | 5 hr |
| Jun 23, 11:45 PM CDT | Severe Thunderstorm Watch | SPC | Lyon, O'Brien, Osceola, Sioux | 6 hr |
| Jun 24, 12:35 AM CDT | Severe Thunderstorm Watch | SPC | Boone, Buena Vista, Calhoun, Carroll, Cerro Gordo, Cherokee and 24 more | 5 hr |
| Jun 24, 1:52 AM CDT | Mesoscale Discussion | SPC | Plymouth | 53 min |
| Jun 24, 2:05 AM CDT | Severe Thunderstorm Watch | SPC | Adair, Adams, Allamakee, Benton, Black Hawk, Boone and 39 more | 5 hr |
| Jun 24, 2:44 AM CDT | Mesoscale Discussion | SPC | Lyon, Osceola, Sioux | 2 hr |
| Jun 24, 3:09 AM CDT | Mesoscale Discussion | SPC | Boone, Buena Vista, Calhoun, Carroll, Cerro Gordo, Cherokee and 12 more | 96 min |
| Jun 24, 11:43 AM CDT | Mesoscale Discussion | SPC | Adams, Cass, Fremont, Harrison, Mills, Montgomery and 3 more | 2 hr |
| Jun 24, 2:15 PM CDT | Tornado Watch | SPC | Cherokee, Lyon, O'Brien, Osceola, Plymouth, Sioux | 8 hr |
| Jun 24, 3:56 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Audubon, Cass, Fremont, Guthrie and 6 more | 64 min |
| Jun 24, 5:25 PM CDT | Severe Thunderstorm Watch | SPC | Adair, Audubon, Boone, Buena Vista, Butler, Calhoun and 30 more | 5 hr |
| Jun 24, 5:59 PM CDT | Mesoscale Discussion | SPC | Lyon, O'Brien, Osceola, Plymouth, Sioux | 61 min |
| Jun 23, 8:17 PM CDT | Mesoscale Discussion | SPC | Adams, Antelope, Boone, Buffalo, Butler, Clay and 37 more | 58 min |
| Jun 23, 8:20 PM CDT | Tornado Watch | SPC | Adams, Buffalo, Clay, Fillmore, Franklin, Furnas and 11 more | 3 hr |
| Jun 23, 8:34 PM CDT | Mesoscale Discussion | SPC | Cheyenne, Deuel, Kimball | 86 min |
| Jun 23, 9:10 PM CDT | Tornado Watch | SPC | Banner, Box Butte, Cheyenne, Deuel, Garden, Kimball and 3 more | 4 hr |
| Jun 23, 10:50 PM CDT | Tornado Watch | SPC | Arthur, Blaine, Chase, Custer, Dawson, Frontier and 10 more | 5 hr |
| Jun 23, 11:08 PM CDT | Mesoscale Discussion | SPC | Banner, Box Butte, Cheyenne, Garden, Grant, Kimball and 3 more | 67 min |
| Jun 24, 12:50 AM CDT | Severe Thunderstorm Watch | SPC | Banner, Cheyenne, Deuel, Garden, Kimball, Morrill and 1 more | 3 hr |
| Jun 24, 1:29 PM CDT | Mesoscale Discussion | SPC | Antelope, Blaine, Boone, Boyd, Brown, Buffalo and 22 more | 3 hr |
| Jun 24, 3:47 PM CDT | Mesoscale Discussion | SPC | Chase, Dundy, Hayes, Hitchcock | 88 min |
| Jun 24, 3:55 PM CDT | Severe Thunderstorm Watch | SPC | Chase, Dawson, Dundy, Frontier, Furnas, Gosper and 3 more | 6 hr |
| Jun 24, 6:30 PM CDT | Mesoscale Discussion | SPC | Buffalo, Dawson, Dundy, Frontier, Furnas, Gosper and 7 more | 2 hr |
Nearby
Tornado Watches in Iowa, 2003Tornado Watches in Nebraska, 2003Tornado Watches in Missouri, 2003Every tornado watch in 2003
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.